1 /*
   2  * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 #include "precompiled.hpp"
  25 #include "gc/z/zPage.inline.hpp"
  26 #include "gc/z/zPhysicalMemory.inline.hpp"
  27 #include "gc/z/zVirtualMemory.inline.hpp"
  28 #include "utilities/align.hpp"
  29 #include "utilities/debug.hpp"
  30 
  31 ZPage::ZPage(uint8_t type, ZVirtualMemory vmem, ZPhysicalMemory pmem) :
  32     _type(type),
  33     _numa_id((uint8_t)-1),
  34     _seqnum(0),
  35     _virtual(vmem),
  36     _top(start()),
  37     _livemap(object_max_count()),
  38     _physical(pmem) {
  39   assert(!_physical.is_null(), "Should not be null");
  40   assert(!_virtual.is_null(), "Should not be null");
  41   assert((type == ZPageTypeSmall && size() == ZPageSizeSmall) ||
  42          (type == ZPageTypeMedium && size() == ZPageSizeMedium) ||
  43          (type == ZPageTypeLarge && is_aligned(size(), ZGranuleSize)),
  44          "Page type/size mismatch");
  45 }
  46 
  47 ZPage::~ZPage() {
  48   assert(_physical.is_null(), "Should be null");
  49 }
  50 
  51 void ZPage::reset() {
  52   _seqnum = ZGlobalSeqNum;
  53   _top = start();
  54   _livemap.reset();
  55 }
  56 
  57 void ZPage::print_on(outputStream* out) const {
  58   out->print_cr(" %-6s  " PTR_FORMAT " " PTR_FORMAT " " PTR_FORMAT " %s%s",
  59                 type_to_string(), start(), top(), end(),
  60                 is_allocating()  ? " Allocating"  : "",
  61                 is_relocatable() ? " Relocatable" : "");
  62 }
  63 
  64 void ZPage::print() const {
  65   print_on(tty);
  66 }